C# Implementation (#2)

C# implementation of SEP-1763

---------

Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>

csharp/sdk/src/ModelContextProtocol.Interceptors/Client/McpClientInterceptorCreateOptions.cs

@@ -0,0 +1,78 @@
+using System.Text.Json;
+using System.Text.Json.Nodes;
+
+namespace ModelContextProtocol.Interceptors.Client;
+
+/// <summary>
+/// Options for creating an <see cref="McpClientInterceptor"/>.
+/// </summary>
+public sealed class McpClientInterceptorCreateOptions
+{
+    /// <summary>
+    /// Gets or sets the name of the interceptor.
+    /// </summary>
+    /// <remarks>
+    /// If not provided, the name will be derived from the method name.
+    /// </remarks>
+    public string? Name { get; set; }
+
+    /// <summary>
+    /// Gets or sets the version of the interceptor.
+    /// </summary>
+    public string? Version { get; set; }
+
+    /// <summary>
+    /// Gets or sets the description of the interceptor.
+    /// </summary>
+    public string? Description { get; set; }
+
+    /// <summary>
+    /// Gets or sets the events this interceptor handles.
+    /// </summary>
+    public string[]? Events { get; set; }
+
+    /// <summary>
+    /// Gets or sets the interceptor type.
+    /// </summary>
+    public InterceptorType? Type { get; set; }
+
+    /// <summary>
+    /// Gets or sets the execution phase.
+    /// </summary>
+    public InterceptorPhase? Phase { get; set; }
+
+    /// <summary>
+    /// Gets or sets the priority hint for mutation ordering.
+    /// </summary>
+    public int? PriorityHint { get; set; }
+
+    /// <summary>
+    /// Gets or sets the JSON schema for the interceptor's configuration.
+    /// </summary>
+    public JsonElement? ConfigSchema { get; set; }
+
+    /// <summary>
+    /// Gets or sets protocol-level metadata.
+    /// </summary>
+    public JsonObject? Meta { get; set; }
+
+    /// <summary>
+    /// Gets or sets the service provider for dependency injection.
+    /// </summary>
+    public IServiceProvider? Services { get; set; }
+
+    /// <summary>
+    /// Gets or sets the JSON serializer options.
+    /// </summary>
+    public JsonSerializerOptions? SerializerOptions { get; set; }
+
+    /// <summary>
+    /// Gets or sets the metadata for the interceptor.
+    /// </summary>
+    public IReadOnlyList<object>? Metadata { get; set; }
+
+    /// <summary>
+    /// Creates a shallow copy of this options instance.
+    /// </summary>
+    public McpClientInterceptorCreateOptions Clone() => (McpClientInterceptorCreateOptions)MemberwiseClone();
+}